baber/WOPTO huggingface dataset:
Patent GB-835493-A (GB)
Title: Improvements in and relating to the removal of nickel from nickel-containing cobalt solutions
Inventor: CORBIAU PAUL-EMILE
IPC: C01G51/10
Filed: 1957-12-18
Abstract: Nickel is removed as sulphide from a nickel-containing cobalt chloride or sulphate solution by simultaneously reacting the solution under a pressure above 76 cms. of mercury and at a temperature above 20 DEG  C. with sulphur and/or an inorganic sulphide (other than H2S) and with hydrogen in the presence of an acid-neutralizing substance. Cobalt sulphide is precipated with the nickel sulphide and may comprise a major portion of the precipitate, but the proportion of nickel in the solution may be reduced to 0.02% or less of the cobalt. Preferred conditions of temperature and pressure are 80-115 DEG  C. and 3-50 ats. respectively.  The sulphide may be Na2S, NaHS, (NH4)2S, NiS or CoS; a suitable cobalt sulphide may, if desired, be produced by reacting a suspension of sulphur with finely divided metallic cobalt at 80-95 DEG  C.  Suitable acid-neutralizing substances which may be used are NaOH, NH3 or Co(OH)2.  The process may be carried out in a number of cycles, in the first of which sodium sulphide or sulphur is employed to treat a first portion of the initial solution and in the second and subsequent cycles the so-formed precipitate (or the residue remaining after the previous cycle) comprising cobalt and nickel sulphides is used with additional acid-neutralizing substance to treat successive portions of the initial solution. The final residue may be treated to recover the nickel and cobalt contained therein.
Patent GB-1442825-A (GB)
Title: Vibration-proof lens attachment
IPC: G02B7/02
Filed: 1973-08-21
Abstract: 1442825 Stabilized optical systems NIPPON KOGAKU KK 21 Aug 1973 [28 Aug 1972] 39655/73 Heading G2J Pairs of lenses 4, 5; 6, 7 are arranged one in each pair in a tube 2 gimballed at 3, C and the other of the pair on outer housing 1, with their respective focal points at C. The pairs of lenses suffer mutual displacement and act as "optical images" to stabilize the optical axis of the combination. The gimbals are viscously damped and spring- biased to the neutral position.
Patent GB-1182647-A (GB)
Title: Reduction of Nitrophenyl Compounds
Inventor: KOLLONITSCH JANOS
IPC: C07D233/95
Filed: 1967-08-30
Abstract: 1,182,647. Reducing nitrophenyl compounds. MERCK & CO. Inc. 30 Aug., 1967 [2 Sept., 1966], No. 39724/67. Heading C2C. A process for reducing a nitrophenyl coinpound to the corresponding aminophenyl compound comprises adding the nitrophenyl compound to an aqueous alkaline medium having a pH of at least 8, adding to it, also in aqueous solution, at least 1 mole of ammonium sulphide per mole of nitrophenyl compound, and recovering the aminophenyl compound from the resulting reaction mixture. The example describes the reduction of 2-(p-nitrophenyl)-4-(5). nitroimidazole to 2-(p-aminophenyl) -4(5)-nitroimidazole using concentrated aqueous ammonia as reaction medium. The preparation of the corresponding o- and m-amino compounds is mentioned.
Patent GB-1206910-A (GB)
Title: Gas turbine heat exchange system
IPC: F28D19/04
Filed: 1969-08-08
Abstract: 1,206,910. Thermal regenerators. FORD MOTOR CO. Ltd. 8 Aug., 1969 [29 Aug., 1968], No. 39801/69. Heading F4K. A ceramic regenerator core 22 rotatably mounted in a gas turbine engine is rotated by a drive arrangement consisting of an annular ring gear 38 which is coupled to the regenerator core by means of a plurality of spaced locating members 26 each comprising a U-shaped bracket 28 having its base 30 bonded to a flexible pad 32. Slots 40 formed in each leg 34, 36 of the bracket open outwardly to slidably receive therein projecting studs 42, 44 provided on the ring gear 38. A leaf spring 46 having its ends fastened to the base 30 in grooves 48 bears against the inner periphery of the ring gear. The ring gear has teeth 50 which mesh with a pinion drive gear 52. The outer peripheral surface of the core can either be circular, Fig. 1, or be made up of flat portions 24, Fig. 2. A solid ceramic rubbing seal 18, e.g. of a nickel oxide-calcium fluoride combination, is located on top of an inner housing 14 which is divided by a wall 15 into passages 16, 17. A metal foil seal 58 is welded to the top of a D-shape seal 58 located above the passage 17. In use cool air from a compressor flows up through a surrounding annular passage 13, through the core 22 and then down through passage 16. Hot combustion gases flow upwardly through passage 17.
Patent GB-963321-A (GB)
Title: Improvements in and relating to polymers
IPC: C08L1/00
Filed: 1962-10-22
Abstract: A cellulose-containing material is filled with a vinyl chloride resin, either the resin or the cellulosic material containing a substance which splits off SO2.  The substance is preferably a sulphite, hydrogen sulphite, pyrosulphite, hyposulphite, hypodisulphite, hypodisulphate or thiosulphate of a mono- or divalent metal or ammonia. In examples the substance is sodium hypodisulphite, barium sulphite or sodium pyrosulphite.  Other ingredients are polyethylene imine, dioctylphthalate, sodium polyacrylate, epoxy plasticizer and calcium stearate.  The cellulosic material is either wood pulp or bleached nettle cloth.ALSO:A cellulose-containing material, e.g. bleached nettle cloth, is coated with a vinyl chloride resin, either the resin or the cellulosic material containing a substance which splits off SO2.  The substance is preferably a sulphite, hydrogen sulphite, pyrosulphite, hyposulphite, hypodisulphite, hypodisulphate or thiosulphate of a mono- or divalent metal or ammonia.  In the examples a cloth is treated with a solution of sodium pyrosulphite then dried and coated with a polyvinyl chloride/dioctyl phthalate paste containing an epoxy plasticizer and calcium stearate.ALSO:A cellulose-containing material, e.g. wood pulp for making paper, is filled with a vinyl chloride resin, either the resin or the cellulose material containing a substance which splits off SO2.  The substance is preferably a sulphite, hydrogen sulphite, pyrosulphite, hyposulphite, hypodisulphite, hypodisulphate or thiosulphate of a mono- or divalent metal or ammonia.  In examples, aqueous wood pulp and powdered polyvinyl chloride are mixed with dioctyl phthalate emulsion and, either processed into paper and coated with sodium hypodisulphite, or mixed with barium sulphite and then processed.  Other ingredients such as polyethylene imine and sodium polyoenylate may be added.
Patent GB-879392-A (GB)
Title: Improvements in or relating to the manufacture of plasterboard
IPC: E04C2/04
Filed: 1959-11-25
Abstract: 879,392. Plasterboard. O'RAHILLY, A. Nov. 25, 1959 [Feb. 25, 1959], No. 40028/59. Class 87(1) In the manufacture of plasterboard adhesion between paper facings and the plaster is obtained by coating the inner surfaces of the facings with starch prior to their application to the plaster. The starch may be applied in solution by spraying, brushing, rolling, or it may be dusted on to the paper. The coated paper may be applied wet or dry to the plaster.
Patent GB-1399922-A (GB)
Title: Fabric labels
IPC: G09F3/10
Filed: 1972-08-30
Abstract: 1399922 Laminates GEORGE H WHEATCROFT & CO Ltd 22 Nov 1973 [30 Aug 1972] 40138/72 Heading B5N [Also in Division B8] A label assembly comprises a strip of separate labels made of fabric, the labels being applied to a carrier strip coated with adhesive, the label fabric being treated in such a way that the labels can be peeled from the strip free from adhesive. The assembly may be made by applying adhesive to one face of a strip of carrier material, treating one face of a strip of fabric with a release agent, joining the treated faces of the carrier material and fabric and cutting the fabric. The carrier strip may be of silicone coated paper, the adhesive may be a crosslinking acrylic emulsion and the fabric may be an acetate fabric coated with a paraffin emulsion as release agent.
Patent GB-1162763-A (GB)
Title: Improvements in or relating to a Process for the Purification and Production of Semiconductor Material
IPC: C01B33/02
Filed: 1967-09-01
Abstract: 1,162,763. Semi-conductor material. SIEMENS A.G. 1 Sept., 1967 [1 Sept., 1966; 17 Aug., 1967], No. 40180/67. Heading C1A. The concentration of volatile carbon-containing impurities in a non-carbon-containing compound of a semi-conductor material is reduced by treating the compound in the liquid state with an inorganic oxidizing agent so as to oxidize the impurities and then reacting the resulting oxidation products with a non-volatile base so as to render them non-volatile. The semiconductor material may be silicon or germanium. The process is preferably carried out in an inert atmosphere e.g. nitrogen. Examples of suitable inorganic oxidizing agents include an aqueous solution of chromium trioxide, permanganic or bromic acid preferably mixed with concentrated sulphuric acid. The non-volatile base is preferably finely divided anhydrous sodium, potassium or calcium hydroxide. Trichlorosilane can be purified in this way by adding per litre of SiHCl 3  either from 0.2 to 20 g. of CrO 3  and 0À1 to 2 ml. of concentrated H 2 SO 4  in from 1 to 20 ml. H 2 O, or from 1 to 30 cc. of 3% aqueous solution of permanganic or bromic acid containing from 1 to 25% concentrated H 2 SO 4 , wherein the mixture is then stirred for 1 to 10 hours, and then from 4 to 80 g. of sodium or potassium hydroxide are added. The treated compound e.g. SiHCl 3  can be vaporized and reacted with a pure gaseous reducing agent e.g. hydrogen in a reaction chamber so as to deposit solid semi-conductor material on a heated support fixed in the reaction chamber.
Patent GB-1368254-A (GB)
Title: Inductive components
IPC: H01F38/10
Filed: 1971-08-31
Abstract: 1368254 Inductors B C JOSEPH 31 Aug 1971 40537/71 Heading H1T A ballast choke for a fluorescent light comprises a stack of laminations, each layer comprising a central leg with an air gap and outer legs, the ends of the legs being joined by yokes whose width is greater by an amount W than the width of the outer legs. Each layer may comprise two E-shaped stampings as shown or a single lamination (Fig. 4, not shown).
Patent GB-1407223-A (GB)
Title: Deflection circuits for cathode-ray tubes
IPC: H04N3/26
Filed: 1972-09-01
Abstract: 1407223 Electron beam electrostatic focusing and deflecting systems PHILIPS ELECTROMC & ASSOCIATED INDUSTRIES Ltd 1 Sept 1972 [4 Sept 1971] 40578/72 Heading H1D [Also in Division H4] A combined focusing and deflecting system comprises an electrode divided into segments (such as S1-S8, Fig. 2) which are connected in a bridge circuit to two deflection signal generators and to a source of focusing potential; the electrode may be arranged between two cylindrical electrodes to form a lens in an image pick-up tube (Fig. 1, not shown). In the arrangement shown in Fig. 2 the horizontal and vertical deflection generators G H  and G V  supply voltages U H #2 and #Uv#2 to opposite points of the bridge; resistances R1-R8 are equal whilst the ratio of R9 to R10 (and similar pairs) is such that the potential on S1 is U V  which has a maximum value of 25 volts. Thus the potentials on the segments are as shown and correspond to the function U V  cos #+U H  sin # where is the mean angle of the segment with respect to the vertical axis. A focussing potential U F  of 100 volts is supplied to the centre of the bridge. In a modification (Fig. 3, not shown), the focusing potential V F  is connected to a potentiometer connected between point P5 (the junction of R10 and R11) and point P6 (the junction of R14 and R15), these points being connected through respective resistances to a common resistance leading to earth; this produces an adjustable quadrupole field between the four odd segments which can correct for astigmatism. By connecting the four even segments in a similar way to the focusing potential source the axes of the quadrupole field may be altered; the four resistances then provided to connect the even segments may be made less than resistances R10, R11, R14 and R15 in order to correct for pincushion distortion or greater in order to correct for barrel distortion. To provide for vertical shift a D.C. component may be added to the A.C. supplied across points P1 and P3, and a similar arrangement may be provided for horizontal shift. If the supply to the electrode segments is made via a cable having appreciable capacitance, resistances R2, R3 and R13 and the corresponding resistances near P4 should be shunted by capacitors; this would be unnecessary if the bridge were formed of a printed circuit near or on the tube envelope, either inside or outside. In a modification, Fig. 4 (not shown), the electrode comprises only six segments, segments S3 and S7 being omitted and the potential on S2 being and the electrode might even be reduced to four segments disposed between the deflection axes.
Patent GB-1436517-A (GB)
Title: Character generator
IPC: B41J2/44
Filed: 1974-09-18
Abstract: 1436517 Printers INTERNATIONAL BUSINESS MACHINES CORP 18 Sept 1974 [23 Oct 1973] 40600/74 Heading G4H A front memory holding the matrix decompositions of characters is addressed with a combination of a base address derived from a character code and the output of a register decrementable to indicate a column within the character matrix. In a zerographic printer the image of a page of characters is produced on a rotating copy drum by a rotating hexagonal mirror which deflects a laser beam to scan parallel to the drum axis to build up the page as a raster as the drum rotates. Assuming that the lines of characters are produced circumferentially of the drum, the beam thus produces one column of the decomposition of one character as a matrix of dots in one line before going on to the next line. As each line of characters is thus dealt with in a given scan line of the beam, a counter 65 accesses from a control register 60 a word respective to this line of characters. This word specifies the character position being dealt with and a column count (for the character matrix). These items are placed in registers 67, 68 respectively and the former is used to address a page memory 57 holding the page of characters to be printed to obtain the required character code. This code, together with status bits to select type style, addresses a ROM table 70 to obtain a base address and the number of columns in the character matrix, these items being placed in registers 82, 84 respectively. At the beginning of the character, register 84 is gated to a register 87 (under control of a zero-detector 85 responsive to register 68) otherwise register 68 is gated to register 87 with decrementing at 104. Register 87 is subtracted from register 82 at 90 to address a font memory 92 to obtain the matrix column which is serialized at 97 and used to modulate the laser beam at 38. The contents of registers 87, 67 are stored into the addressed word of control register 60, the contents of register 67 being incremented by one at 100 at the end of a character (under control of a onedetector 101 responsive to register 68) to subsequently select the next character position in the line. If the lines of characters are to be produced parallel to the drum axis (so that the lase scan line goes along the line of characters) the words in control register 60 relate to columns of characters (perpendicular to the lines) rather than lines,the status bits 76 are adjusted to access, via table 70, rotated fonts in font memory 92, and the incrementing at 100 is by the number of characters per line rather than by one. Space codes are provided as necessary in the page memory 57 but to save long sequences of them, "end of row", "end of scan" and "end of page" codes are also used. Two fewer bits may be used in table 70 to specify the number of columns in the character matrix by use of a 2-bit counter. Font memory 92 may use compression coding.
Patent GB-1415585-A (GB)
Title: Injection apparatus comprising a fuel-injection nozzle holder  with connection piece for leakage oil
IPC: F02M55/00
Filed: 1973-08-29
Abstract: 1415585 Fuel injection nozzles DAIMLERBENZ AG 29 Aug 1973 [30 Aug 1972]  40632/73 Heading F1B Injection apparatus for an air-compressing fuelinjection I.C. engine comprises an injection valve nozzle holder 1 and a projecting connection piece 8, through which leakage fuel oil is conducted away from the holder and which is attached to the holder by a nipple 6 located at the side of the holder 1, the connecting piece 8 being secured against disconnection by means of a nut 2 which, in use, connects the holder 1 to a fuel line 3. The nipple 6 may be formed on either the holder 1, Fig. 1, or the connecting piece 8, Fig. 4. The leakage duct 4 in the holder, duct 5 in the nipple 6 and ducts 12, 13 in the connection piece lie in one plane making an angle of about 10 degrees with the axis of holder 1. In the Fig. 4 embodiment, leakage oil from a neighbouring injector flows along duct 12 and this oil together with that leaking from the nozzle holder 1, passes via duct 13 back to the fuel supply circuit.
Patent GB-1522397-A (GB)
Title: Heat shrinkable laminate film and method of preparing it
IPC: B29C48/335
Filed: 1976-09-30
Abstract: 1522397 Laminates W R GRACE & CO 30 Sept 1976 [2 Oct 1975] 40681/76 Heading B5N and B5B A method of making a heat-shrinkable packaging film comprises : (a) forming a laminate, e.g. by co-extrusion, comprising an oxygen barrier layer comprising a hydrolysed ethylenevinyl acetate copolymer disposed between two other polymeric layers, at least one of which comprises a cross-linked polymer, (b) heating the laminate to the orientation temperature of the cross-linked polymer and (c) stretching the heated laminate to orient the cross-linked polymer. The cross-linked polymer may be a homo- or copolymer of an olefine, an exemplified comonomer being vinylacetate, cross-linking being effected by irradiation or chemically. Other polymers which may be present in the laminate are polyvinyl chloride, polyamides, comonomers, acrylic polymers, polyesters, polycarbonates, polystyrene and polyvinylidene chloride.
Patent GB-908069-A (GB)
Title: A process of and an apparatus for the purification of a gas or gas mixture
IPC: C01B23/00
Filed: 1959-12-01
Abstract: 908,069. Reactors. LINDE'S EISMASCH. INEN A.G. GES. FUR. Dec. 1, 1959 [Dec. 2, 1958 (2)], No. 40761/59. Class 39 (4). A gas containing radioactive and other impurities is purified in several stages in such a way that active impurities are removed in one stage while other impurities are removed in other stages. The Figure shows a cooling system through which is diverted part of the coolant of a nuclear reactor, a mixture of He and Ne; the coolant enters at A (solid line) and leaves at B (dotted line). A heated catalyst unit 1 oxidizes H 2  and CO to H 2 O and CO 2 . The coolant is cooled in heat exchangers 3 to 6 by returning coolant and by cold air (dash and dot line) ; easily condensable substances are removed at 7. H 2 O and CO 2  are removed in gel dryer 8 at -60 ‹ C. Refrigeration then takes place in heat exchangers 10, 11 by means of cold air from a liquid air evaporator 12. Radioactive materials are removed by activated charcoal at 13 at below -70‹ C. Several dryers 8 and adsorbers 13 are provided; they are used in succession and their total working life is comparable with that of the reactor. The adsorbers remove all active impurities and very little else and can be made small. The returning flow of purified coolant is used as a protective gas for the impure coolant.
Patent GB-1171297-A (GB)
Title: Electric Switch
IPC: H01H71/62
Filed: 1966-09-13
Abstract: 1,171,297. Arc-preventing in switches. ALLEN-BRADLEY CO. 13 Sept., 1966 [20 Sept., 1965], No. 40884/66. Heading H1N. A switch base 2, Fig. 3, for an automatic circuit-breaker comprises one or more arc chambers 35 each containing fixed contacts 14 and which are substantially closed by an arc shield 47 on a movable carrier for the movable contacts 43. The chambers 35 are formed by the moulded casing walls 2 and barriers 27 between each contact set. The barriers 27 and other parts of the casing 2 may be formed of arc suppressing materials, such as aluminium and magnesium oxides or hydrates in a water insoluble binder. The actuating and automatic circuit breaking module attached to the base 2 is described in Specifications 1,171,298, 1,171,299 and 1,171,300.
Patent GB-1112616-A (GB)
Title: Improved polyester fibres
Filed: 1965-09-27
Abstract: A composition comprises polyethylene terephthalate containing from 0.1 to 5.0 wt. per cent of an additive which is either BaSO4 of average particle diameter 1.0-5.0 m  or TiO2 of 0.02-0.1 m  or a mixture of both.  They may be added during polymerization or by subsequent blending.  Other materials e.g. pigments, delustering agents and fillers (none specified) may be added.
Patent GB-999576-A (GB)
Title: Improvements in packaging box
IPC: B65D5/72
Filed: 1963-10-21
Abstract: 999,576. Springs. H. WENGER. Oct. 21, 1963 [Jan. 7, 1963], No. 41512/63. Heading F2S. [Also in Division B8] A dispensing carton comprises a closure hingedly connected to and formed at least in part by a side or end wall of the carton and an elongated spring strip tensioned to have a bent longitudinal form, such as shown in Fig. 5, and which is at the same time bent longitudinally to have a peaked cross-section, Fig. 7, or curved cross-section (Fig. 8, not shown), which latter tensioning biases the spring into a straight formation against the former tensioning and wherein the spring is secured longitudinally against the outer face of said closure and across the hinged connection, whereby inward pressure applied against the spring below the hinge connection causes, by snap-action of the spring, opening of the closure. In the embodiment of Fig. 1, the closure 11 is delimited by lines of weakness 13-15 or slits and the spring strip 17, which may be of metal, is preferably secured to the carton by an overlay 18 of transparent or opaque sheet material. In a second embodiment (Fig. 9, not shown), the closure is in the form of a lid.
Patent GB-1391050-A (GB)
Title: Bucket
IPC: E02F3/40
Filed: 1973-09-04
Abstract: 1391050 Excavator buckets CATERPILLAR TRACTOR CO 4 Sept 1973 [11 Sept 1972] 41576/73 Heading E1F A bucket 10 for use with a loader vehicle includes one or a pair of spaced reinforcement structures 24, 25 secured to the bottom wall 12 portion of the bucket. The or each reinforcement structure defines a box section which runs transversely of the cutting edge of the bucket. The section is defined by a pair of ribs 26, 28 which run continuously rearward from the cutting edge 20 along the bottom wall portion and may extend up the rear wall portion of the bucket and a plate 50 secured to the lower edges of the ribs. Additional bracing ribs 42, 48 and bracing plates 44, 46 may form part of the or each structure.
Patent GB-921869-A (GB)
Title: Transmission gearing
IPC: F16H57/033
Filed: 1961-11-22
Abstract: 921,869. Change speed gear. J. L. GRATZMULLER. Nov. 22, 1961 [Nov. 25, 1960; Nov. 9, 1961], No. 41726/61. Class 80 (2). In a change speed gear comprising a number of selectable ratio gear-boxes arranged in cascade, the quotient of any pair of adjacent ratios in any gear-box equals the quotient of any pair of adjacent ratios in a preceding gear-box raised to a power equal to the number of ratios in that preceding gear-box. In a twospeed gear, Fig. 1, which may form one of the gear-boxes, a low speed drive from shaft 1 passes through gears 3, 5 and an overrunning clutch 7 to the shaft 2, and a high speed drive through a clutch 8, which may be actuated by an electrohydraulic device as described in Specification 909,138 or 826,694, and gears 4, 6. In the embodiment shown in Fig. 2, four of these gear-boxes A, B, C, D are arranged in cascade and the clutches 8a, 8b, 8c, 8d operated by a binary encoding switch 25 to provide sixteen ratios. To reduce space, the gearing may be contained within one casing, Fig. 3, and the shafts lie in different planes, the output shaft 28 of gear-box A being the input shaft of gearbox B &c. Ratio-shift may be smoothed by torque-limiting couplings in the input shaft or by means to reduce the input shaft speed by the quotient of adjacent ratios such as an initial gear-box or by braking the input shaft.